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CVE-2026-31732

Estado: ModificadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

gpio: Fix resource leaks on errors in gpiochip_add_data_with_key()

Since commit aab5c6f20023 ("gpio: set device type for GPIO chips"), `gdev->dev.release` is unset. As a result, the reference count to `gdev->dev` isn't dropped on the error handling paths.

Drop the reference on errors.

Also reorder the instructions to make the error handling simpler. Now gpiochip_add_data_with_key() roughly looks like:

Detalles técnicos trazas, registros y código del informe original
   >>> Some memory allocation.  Go to ERR ZONE 1 on errors.
   >>> device_initialize().

   gpiodev_release() takes over the responsibility for freeing the
   resources of `gdev->dev`.  The subsequent error handling paths
   shouldn't go through ERR ZONE 1 again which leads to double free.

   >>> Some initialization mainly on `gdev`.
   >>> The rest of initialization.  Go to ERR ZONE 2 on errors.
   >>> Chip registration success and exit.

   >>> ERR ZONE 2.  gpio_device_put() and exit.
   >>> ERR ZONE 1.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: Fix resource leaks on errors in gpiochip_add_data_with_key()\n\nSince commit aab5c6f20023 (\"gpio: set device type for GPIO chips\"),\n`gdev->dev.release` is unset.  As a result, the reference count to\n`gdev->dev` isn't dropped on the error handling paths.\n\nDrop the reference on errors.\n\nAlso reorder the instructions to make the error handling simpler.\nNow gpiochip_add_data_with_key() roughly looks like:\n\n   >>> Some memory allocation.  Go to ERR ZONE 1 on errors.\n   >>> device_initialize().\n\n   gpiodev_release() takes over the responsibility for freeing the\n   resources of `gdev->dev`.  The subsequent error handling paths\n   shouldn't go through ERR ZONE 1 again which leads to double free.\n\n   >>> Some initialization mainly on `gdev`.\n   >>> The rest of initialization.  Go to ERR ZONE 2 on errors.\n   >>> Chip registration success and exit.\n\n   >>> ERR ZONE 2.  gpio_device_put() and exit.\n   >>> ERR ZONE 1."
    }
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  "lastModified": "2026-07-04T12:16:55.690",
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